Metal window-sill.



G. S. THORNE.

METAL WINDOW SILL. APPLICATION FILED FEB.19, 1909.

Patented Aug. 24, 1909.

fl \NV NTFR UNITED STATES PATENT OFFICE.

CHARLES S. THOBNE, 0F TROY, NEW YORK, ASSIGNOR TO THE THOR-NE HOLD-FAST METAL BAR COMPANY, A CORPORATION OF NEW YORK.

METAL WINDOW-SILL.

T 0 a1; whom it may concern:

Be itknown that I, CHARLES S. THORNE, a

citizen of the United States, residing at Troy, county of Rensselaer, and State of New York, have invented certain new and useful Improvements in Metal Windows Sills, of which the following is a specification.

The invention relates to such improvements and consists of the novel construction and combination of parts hereinafter described and subsequently claimed.

Reference may be had to the accompanying drawings, and the reference characters marked thereon, which form a part of this specification. Similar characters refer to similar parts in the several figures therein.

Figure 1 of the drawings is a view in isometrical perspective of my improved windowsill, showing a piece of window-glass clamped thereupon. Fig. 2 is a vertical cross section of the same taken through one of the screw-bolt connections. Fig. 3 is a view in perspective of a broken-away portion of the metal sill, illustrating the means for connecting the head of the fastening bolt withthe, retrovert-portion of the outer flange of the sill.

Certain objects of the invention are to suitably support along its lower edge a plate of window-glass, and to'permit the free escape of liquid, due to condensation upon the inner surface of said glass. a Other objects of the invention will appear 1n connection with the following description. The 1nvention is applicable to window- 5111s of various kinds, and is particularly adapted for the sills of show-windows of store-fronts.

Referring to the drawings wherein the invention is shown in preferred form, 1,-represents the sub-structure of wood or other material of an ordinary show-window of a store-front. Upon the sub-structure is shown mounted my improved sill. The sillproper comprises a plate of metal of channeled or trough form, having the bottom or base-plate, 2, and projecting upwardtherefrom along its opposite edges the outer vertical flange, 3, and inner vertical flange 4c. Theouter vertical flan e, 3, has a retrovertportion, 5, extending ownward, nearly to the base-plate, 2, and is adapted to engage along its upper edge with the front surface Specification of Letters Patent.

Application filed February 19, 1909.

Serial No. 478,880.

.of a plate of lass 6. The plate of glass, 6,.

ward each other, the retrovert-portion, 5, of

the flange, 3, and the clamp-plate, 7, as

shown in Fig. 2, and to clamp therebetween the plate-glass 6. The bolts, 8, pass below the plate-glass, 6, and saidplate-glass is supported and preventedfrom contact with the bolts by means of a Z-shaped metal-plate, E), one end of which underlies the plate-glass, 'and the other end of which bears upon the base-plate, 2, and is held by a screw, 10, inserted therethrough, and through said baseplate into the sub-structure 1, thereby re taining both said 2- haped plate and the S111- proper in position upon the sub-structure. A packing, 11,0f leather or other yielding material may be interposed between the bottom edge of the plate-glass, 6, and said Z- Patented Aug. 24, 1909.

shaped plate. Said Z-sha ed plates are disa v posed beneath the plate-g ass at suitable intervals to properly support the same.

The clamp-plate, 7, extends to within a short'distance of the base-plate, 2, leaving in the intervals betweenthe Z -sh aped sup-' liquid drip resulting from condensation of moisture upon the inner surface of the plateglass, and said liquid is free to flow beneath the clamp-plate, 7, and retrovert-portion, 5, of the outer flange, 3, to the outer end of the base-plate, 2, whereat means for the escape of such liquid iaprovided. As a preferred means for the escape of such liquid, I have shown as an integral part of the sill a gutter, 12, projecting downwardly and outwardly to a point slightly beyond the sub-structure, 1, and provided at its outer and'lower. end with one or more Outletopenings, 13, for the free escape of such liquid.

By the construction above described, the plate-glass is substantially .yet yieldingly supported, suitable ventilation is aflorded to the bolt adjacent to the head is slid along the slot, 15, to the end thereof, By connecting the attaching bolt with theretrovert-por- I tion of an outer flange on the sill, as shown,

I am able to securely clamp the glass in position without the use of exteriorly exposed fastening mechanism.

hat I claim as new and desire to secure by Letters Patent is- 1. A metal window-sill comprising in an integral structure a base-plate, a flange projecting upward therefrom along the outer edge thereof having a retrovert terminalportion engageable with the outer side of a plate of glass mounted upon said sill, in

' combination with a clamp-plate engageable with the inner side of said plate of glass, said clamp-plate and said retrovert terminalportion depending below the lower edge of said glass; and horizontal connections be tween the so-depending portions of said clamp-plate and of the retrovertterminalportion of saidflange.

2. A metal window-sill comprising in an integral structure a base-plate, a flange projecting upward therefrom along the outer edge thereof having a retrovert terminal-portion engageable with the outer side of a plate of glass "mounted upon said sill, said terminal-portion depending below the lower edge of said glass, and being provided in its sodepending portion 'with a screw-head aperture and a slot leading therefrom, in combination with a clamp-plate engageable with the inner side of said plate of glass, and having a portion depending below the ed e of said glass; a screw extending transverse beneath the lower edge of said glass, wit

its head seated in the slotted retrovert terminal-portion ofsaid flange; and a nut fitting said screw and engageable with the depending portion of said clamp-plate.

3. In a window-construction, and in combination, a sub-structure; a metal sill mounted upon said sub-structure, and comprising in integral form a base-plate, a flange projecting upward therefrom along the inner edge thereof, a flange projecting upward therefrom along the outer edge thereof having a retrovert-portion adapted to engage the outer side of a plate of glass mounted upon said sill, and a gutter extending obliquely downward and outward from the base of said outer flange to a point beyond said sub-structure whereat it is provided with a drip-outlet; a clamp-plate adapted to engage the inner side of said plate of glass; and horizontal screw-connections beneath said glass between said clamp-plate and the retrovert-portion of said outer flange, said clamp-plate and retrovert-portion of said outer flange lying between the vertical planes of said inner and outer flanges, and a free drip-space being provided between said inner flange and said gutter.

In testimony whereof, I have hereunto set my hand this 9th day of February, 1909.

I CHARLES S. THORNE. Witnesses:

FRANK C. Gnarls, J. DoNsnAoH. 

